Adsorption of uranium (VI) from mixed chloride-fluoride solutions by anion-exchange resins

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6330211

Pakholkov, V S; Denisova, L A; Rychkov, V N; Kurnosenko, N A

Experimental data are reported and discussed concerning the adsorption of uranium from 0.025 M solutions of UO/sub 2/Cl/sub 2/, containing HCl, HF, and NH/sub 4/Cl over a wide concentration range, using anion-exchange resins of varying basicities. UV and IR spectroscopic studies were conducted in order to clarify the chemical mechanism of uranium adsorption. Adsorption isotherms for all of the ion-exchange resins studied are convex in shape and can be described by the following equations: log K/sub d/ = a + b (-log C/sub e/), and log A = a + (b + 1) log C/sub e/, where A is the adsorptivity in mmole U/g; K/sub d/ is the distribution coefficient in mg/liter; and C/sub e/ is the equilibrium concentration of U in mmole/ml. General mathematical models have been obtained to describe the adsorption process; these consist of a system of regression equations derived from the results of a complete 2/sup 3/ factorial study.

• OSTI ID: 6330211
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

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ACTINIDE COMPOUNDS
ADSORPTION
ADSORPTION ISOTHERMS
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
ELECTROLYTES
EQUILIBRIUM
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ION EXCHANGE
ION EXCHANGE MATERIALS
ISOTHERMS
MATERIALS
MATHEMATICAL MODELS
MATHEMATICS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
QUANTITY RATIO
REGRESSION ANALYSIS
RESINS
SORPTION
SORPTIVE PROPERTIES
SPECTRA
STATISTICS
SURFACE PROPERTIES
ULTRAVIOLET SPECTRA
URANIUM COMPOUNDS
URANYL CHLORIDES
URANYL COMPOUNDS
VALENCE